3 H 
HERONS , STORKS, AND IRISES. 
overlapping, throughout. The change does not appear to me to be due to anj loss 
of material of the bill by attrition, but to a structural bowing or arching of the 
mandibles.” 
Wood-Storks. 
Although 
family in the 
agreeing with the other members of the present 
general form of the beak, the wood-storks, or wood- 
WEST AFRICAN WOOD-STORK (J nat. size). 
ibises, form a kind of connecting link between the typical storks and the ibises, 
and are frequently referred to a separate family. In these birds the neck is of 
medium length; the head large; the beak thick, long, rounded, tapering, and 
curving downwards at the tip; the foot long-toed, with large webs ; the wing long 
